Riveting device.



J. TISGHLER.

RIVBTHG DEVICE.

APPLIOATIQH Hmm JULY a, 1909.

INVENTUH 8) r @Li/M44 d WrTESSES @M M cli JOHN TISCHLER, OF EASTPORTCHESTER, CONNECTICUT.

RIVETING DEVICE.

Specification of LettersPatent.

Patented Feb. 8, 1910.

Application led July 3, 1903. Serial No. 505,918.

To all whom 'it may concern:

Be it known that I, JOHN TISCHLER, a citizen of the United States, and aresident of East Portehester, in the county of Fairfield and State ofConnecticut, have invented a nei: and Improved Riveting Device, of whichthe following is a full, clear, and exact description. l

T his invention relates to certain improvements in riveting devices, andinvolves a new andv improved clamp so constructed that it. may engagewith the head of a rivet to hold the latter in place, and. at the sametime, tn leave the opposite end ofthe rivet exposed so that itl may bepounded or beatencd into the form of a second head.

My improved riveting clamp includes a frame with arms rigid in respectto each other and adapted to extend upon opposite sides of the materialthrough which the rivet is being secured. The length of these arms willdepend entirely upon the distance of the rivet from the edge of thematerial. One of these arms is provided with a screw rod movablelongitudinally into engagement with the head of the rivet and adapted toforce the rivet to its seat and hold it there while the rivetingr actionis taking place. The other arm is provided with a clamping face forengaging with the opposite side o the material, and is so formed thatthis clamping face presents portions upon oppo` site sides of the rivetbut leaves the end of the rivet free and exposed to permitit to beswaged or pounded over.

Various changes may be made in the specific form and relativeproportions oi' the clamp, but these changes will be dependentlargelyupon the character of the work in connection with which it is to beemployed.

Reference is to be had to the accompanying drawings, forming a part ofthis specificatie-n, in which similar characters of reference indicatecorresponding parts in all the figures, and in Which- Figure 1 shows oneforni of my im roved riveting clamp, especially designed ihr use insecuring the rivets in a lapped seam bolt; Fig. 2 is a side elevation ofthe body portion of the clamp; Fig. 3 is a view of one end of the bodyportion; FiO'. 4c is a view of the opposite end of the body portion; Fig. 5 is a side elevation of one form of clamping head; and Fig. 6 is alongitudinal section through a modified form of clamping head.

This passage is in direct alinement with the 1 axis of the threadedaperture 13, and the two lingers constitute portions lying upon oppositesides of said axis. The two fingers or portions 14, 14, have a face 16lying in a plane substantially at right angles to the axis of thethreaded aperture and constituting a clamping face for engagement withone side of the material. Threaded through the aperture 13 is a screwrod 1T, having a clamping head 18 and any suitable handle 19 tofacilitate the rotation of the rod. The head 18 is so connected to thescrew rod that it need not necessarilyr rotate during the rotation ofthe screw rod. Preferably, the screw rod has an annular groove Q0 in itsouter surface adjacent the free end, and the clamping head 18 has aninwardly-extending set screw 21 entering this groove. The outer end orface of the clamping head 18 may be ot any shape desired dependent. uponthe character of the work to be performed. The head 18 shown in Figs. 1and 5 has a reduced end of substantially the same size as the head ofthe rivet to be held, while the head 18a shown in Fig. 6, has anenlarged face 22 with a central recess 23 to receive a particular shapedrivet or bolt head.

The specific form of the device illustrated is particularly adapted foruse during the riveting together ofthe lapped bars forming the side of aboat or other vessel. After each bar is placed in position, the clamp isplaced over the edge of the bar with the clamping head 18 in engagementwith the head ot' the rivet. A screw rod is turned until the clampingface 1G firmly engages with the inner surface of one bar and theclamping head 18 firmly engages with the head of the rivet. The oppositeend of the rivet will be disposed centrally of the passage 15 and willbe freely exposed, so that after the Washer is placed in position, theend of the rivet may receive blows from various different. angles inswaging the head to hold the washer in place.

Having thus described my invention, l claim as new and desire to secureby Letters Patent:

A riveting clamp, comprising a frame, including two arms,4 one of saidfurnis having a threaded aperture therethrough and the other of saidarms having branches disposed upon opposite sides of the longitudinalaxis of said threaded aperture and presenting clamping facesl in a planeat right angles to said axis, and a screw rod longitudinally movablethrough the threaded aperture and having an annular groove adjacent oneend thereof, and a clamping head having a JOHN TISGHLER.

lVitnesses':

IMoGENn XVESSELS, ETHEL Snaren.

